{
  "manageEntity": {
    "action": "Save",
    "entityId": "1614718649",
    "entityType": "Track",
    "nonce": "0x7aa28d5d87fd291d3ba2eec1efd2353b52d801d66e12708400c3c7f71b6ddb01",
    "signature": "0x8707682f63b6152b42a22e4a3ff991234bfc724776c50101cb73ffe8201d698a49c43e819f12b3c21c2cf14cf5532c1128fbadea09fc560eb86ec8b560add6501b",
    "signer": "0x06Ad5789cE045C5B0AeB97849051a7385CA95B4a",
    "userId": "270209897"
  }
}